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Using Context for the Extraction of Relational Views

机译:使用上下文提取关系视图

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摘要

The paper presents an approach for automatically extracting views from a relational database schema, based on the knowledge of the application domain. In order to achieve such result, the possible contexts emerging from the application domain are identified and, starting from the representation of the characterizing dimensions, a sequence of operations is applied to the schema to derive the portion of interest or, as we say, to tailor the schema with respect to each possible context. We introduce the tailoring operators as well as the method to compose partial views to obtain the final ones; a running example is used to lead the reader through the steps of the proposed methodology.
机译:本文提出了一种基于应用程序域知识自动从关系数据库架构中提取视图的方法。为了获得这样的结果,识别从应用程序域出现的可能的上下文,并从表征维度的表示开始,将一系列操作应用于该模式,以得出感兴趣的部分,或者,如我们所说,针对每个可能的上下文量身定制架构。我们介绍了剪裁运算符以及组成局部视图以获得最终视图的方法;一个运行中的例子被用来引导读者完成所提出方法的步骤。

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